threading/SleepEx/test1/paltest_sleepex_test1 failing intermittently for freebsd

The freebsd sleep test is failing intermittently. I think this probably just needs to have its tolerances loosened a bit.

Example:

http://dotnet-ci.cloudapp.net/job/dotnet_coreclr_freebsd_release/172/console

该提问来源于开源项目：dotnet/runtime